Christmas tree stand



FIG. 1 is a perspective view of a Christmas tree stand showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a side elevation view thereof.

The broken line showing the tree trunk in FIG. 1 is included for the purpose of illustrating only and forms no part of the claimed design.

All surfaces not shown form no part of the claimed design. 

The ornamental design for a Christmas tree stand, as shown and described. 